./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/parallel-misc-2.wvr.c --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --architecture 32bit
--------------------------------------------------------------------------------
Checking for ERROR reachability
Using default analysis
Version b8dbc81d
Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/weaver/parallel-misc-2.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) )
--witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c245694d80bb36f575f27eb50fa261b26ec38a4ced597397981ad6c6c7486707 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER
--- Real Ultimate output ---
This is Ultimate 0.2.3-?-b8dbc81
[2023-08-31 01:55:13,133 INFO L177 SettingsManager]: Resetting all preferences to default values...
[2023-08-31 01:55:13,142 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values
[2023-08-31 01:55:13,185 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2023-08-31 01:55:13,185 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2023-08-31 01:55:13,188 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2023-08-31 01:55:13,190 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2023-08-31 01:55:13,193 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values
[2023-08-31 01:55:13,195 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values
[2023-08-31 01:55:13,199 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values
[2023-08-31 01:55:13,200 INFO L181 SettingsManager]: Resetting Sifa preferences to default values
[2023-08-31 01:55:13,202 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2023-08-31 01:55:13,202 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values
[2023-08-31 01:55:13,204 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values
[2023-08-31 01:55:13,205 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2023-08-31 01:55:13,210 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values
[2023-08-31 01:55:13,211 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2023-08-31 01:55:13,212 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2023-08-31 01:55:13,213 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2023-08-31 01:55:13,218 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values
[2023-08-31 01:55:13,219 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2023-08-31 01:55:13,220 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values
[2023-08-31 01:55:13,221 INFO L181 SettingsManager]: Resetting Referee preferences to default values
[2023-08-31 01:55:13,221 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values
[2023-08-31 01:55:13,225 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2023-08-31 01:55:13,226 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2023-08-31 01:55:13,226 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values
[2023-08-31 01:55:13,226 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values
[2023-08-31 01:55:13,227 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values
[2023-08-31 01:55:13,227 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring...
[2023-08-31 01:55:13,228 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values
[2023-08-31 01:55:13,228 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2023-08-31 01:55:13,229 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values
[2023-08-31 01:55:13,229 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values
[2023-08-31 01:55:13,230 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2023-08-31 01:55:13,230 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values
[2023-08-31 01:55:13,230 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2023-08-31 01:55:13,230 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring...
[2023-08-31 01:55:13,230 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values
[2023-08-31 01:55:13,231 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values
[2023-08-31 01:55:13,231 INFO L188 SettingsManager]: Finished resetting all preferences to default values...
[2023-08-31 01:55:13,234 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf
[2023-08-31 01:55:13,265 INFO L113 SettingsManager]: Loading preferences was successful
[2023-08-31 01:55:13,265 INFO L115 SettingsManager]: Preferences different from defaults after loading the file:
[2023-08-31 01:55:13,266 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2023-08-31 01:55:13,266 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2023-08-31 01:55:13,267 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2023-08-31 01:55:13,267 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2023-08-31 01:55:13,268 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2023-08-31 01:55:13,268 INFO L138 SettingsManager]: * Create parallel compositions if possible=false
[2023-08-31 01:55:13,268 INFO L138 SettingsManager]: * Use SBE=true
[2023-08-31 01:55:13,268 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2023-08-31 01:55:13,269 INFO L138 SettingsManager]: * sizeof long=4
[2023-08-31 01:55:13,269 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true
[2023-08-31 01:55:13,270 INFO L138 SettingsManager]: * sizeof POINTER=4
[2023-08-31 01:55:13,270 INFO L138 SettingsManager]: * Check division by zero=IGNORE
[2023-08-31 01:55:13,270 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2023-08-31 01:55:13,270 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2023-08-31 01:55:13,270 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2023-08-31 01:55:13,270 INFO L138 SettingsManager]: * sizeof long double=12
[2023-08-31 01:55:13,271 INFO L138 SettingsManager]: * Check if freed pointer was valid=false
[2023-08-31 01:55:13,271 INFO L138 SettingsManager]: * Use constant arrays=true
[2023-08-31 01:55:13,271 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2023-08-31 01:55:13,271 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2023-08-31 01:55:13,271 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements
[2023-08-31 01:55:13,271 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode
[2023-08-31 01:55:13,272 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2023-08-31 01:55:13,272 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2023-08-31 01:55:13,272 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2023-08-31 01:55:13,272 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2023-08-31 01:55:13,272 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL
[2023-08-31 01:55:13,272 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2023-08-31 01:55:13,273 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET
[2023-08-31 01:55:13,273 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2023-08-31 01:55:13,273 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO
[2023-08-31 01:55:13,273 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode
[2023-08-31 01:55:13,273 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC
[2023-08-31 01:55:13,274 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC
WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int)
WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) )
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c245694d80bb36f575f27eb50fa261b26ec38a4ced597397981ad6c6c7486707
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER
[2023-08-31 01:55:13,587 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2023-08-31 01:55:13,607 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2023-08-31 01:55:13,610 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2023-08-31 01:55:13,612 INFO L271 PluginConnector]: Initializing CDTParser...
[2023-08-31 01:55:13,612 INFO L275 PluginConnector]: CDTParser initialized
[2023-08-31 01:55:13,613 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-misc-2.wvr.c
[2023-08-31 01:55:14,693 INFO L500 CDTParser]: Created temporary CDT project at NULL
[2023-08-31 01:55:14,903 INFO L351 CDTParser]: Found 1 translation units.
[2023-08-31 01:55:14,904 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-misc-2.wvr.c
[2023-08-31 01:55:14,909 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/08315a447/777e6d847e764fb08810a2142c5f02eb/FLAG0dc2a7e72
[2023-08-31 01:55:14,920 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/08315a447/777e6d847e764fb08810a2142c5f02eb
[2023-08-31 01:55:14,923 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2023-08-31 01:55:14,924 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements.
[2023-08-31 01:55:14,929 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2023-08-31 01:55:14,930 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2023-08-31 01:55:14,933 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized
[2023-08-31 01:55:14,934 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.08 01:55:14" (1/1) ...
[2023-08-31 01:55:14,935 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@37881c8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:55:14, skipping insertion in model container
[2023-08-31 01:55:14,935 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.08 01:55:14" (1/1) ...
[2023-08-31 01:55:14,942 INFO L145 MainTranslator]: Starting translation in SV-COMP mode
[2023-08-31 01:55:14,962 INFO L178 MainTranslator]: Built tables and reachable declarations
[2023-08-31 01:55:15,141 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-misc-2.wvr.c[2554,2567]
[2023-08-31 01:55:15,145 INFO L209 PostProcessor]: Analyzing one entry point: main
[2023-08-31 01:55:15,157 INFO L203 MainTranslator]: Completed pre-run
[2023-08-31 01:55:15,213 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-misc-2.wvr.c[2554,2567]
[2023-08-31 01:55:15,218 INFO L209 PostProcessor]: Analyzing one entry point: main
[2023-08-31 01:55:15,224 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler.
[2023-08-31 01:55:15,226 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler.
[2023-08-31 01:55:15,231 INFO L208 MainTranslator]: Completed translation
[2023-08-31 01:55:15,232 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:55:15 WrapperNode
[2023-08-31 01:55:15,232 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2023-08-31 01:55:15,233 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2023-08-31 01:55:15,233 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner...
[2023-08-31 01:55:15,234 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized
[2023-08-31 01:55:15,239 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:55:15" (1/1) ...
[2023-08-31 01:55:15,253 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:55:15" (1/1) ...
[2023-08-31 01:55:15,276 INFO L138 Inliner]: procedures = 21, calls = 28, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 72
[2023-08-31 01:55:15,277 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2023-08-31 01:55:15,278 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2023-08-31 01:55:15,278 INFO L271 PluginConnector]: Initializing Boogie Preprocessor...
[2023-08-31 01:55:15,279 INFO L275 PluginConnector]: Boogie Preprocessor initialized
[2023-08-31 01:55:15,286 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:55:15" (1/1) ...
[2023-08-31 01:55:15,286 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:55:15" (1/1) ...
[2023-08-31 01:55:15,290 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:55:15" (1/1) ...
[2023-08-31 01:55:15,290 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:55:15" (1/1) ...
[2023-08-31 01:55:15,304 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:55:15" (1/1) ...
[2023-08-31 01:55:15,308 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:55:15" (1/1) ...
[2023-08-31 01:55:15,312 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:55:15" (1/1) ...
[2023-08-31 01:55:15,314 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:55:15" (1/1) ...
[2023-08-31 01:55:15,318 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2023-08-31 01:55:15,319 INFO L113 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2023-08-31 01:55:15,320 INFO L271 PluginConnector]: Initializing RCFGBuilder...
[2023-08-31 01:55:15,320 INFO L275 PluginConnector]: RCFGBuilder initialized
[2023-08-31 01:55:15,321 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:55:15" (1/1) ...
[2023-08-31 01:55:15,326 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2023-08-31 01:55:15,336 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-08-31 01:55:15,350 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
[2023-08-31 01:55:15,385 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process
[2023-08-31 01:55:15,395 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2023-08-31 01:55:15,396 INFO L130 BoogieDeclarations]: Found specification of procedure thread1
[2023-08-31 01:55:15,396 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1
[2023-08-31 01:55:15,396 INFO L130 BoogieDeclarations]: Found specification of procedure thread2
[2023-08-31 01:55:15,396 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2
[2023-08-31 01:55:15,396 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int
[2023-08-31 01:55:15,396 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2023-08-31 01:55:15,396 INFO L130 BoogieDeclarations]: Found specification of procedure write~int
[2023-08-31 01:55:15,396 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end
[2023-08-31 01:55:15,397 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin
[2023-08-31 01:55:15,397 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2023-08-31 01:55:15,397 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2023-08-31 01:55:15,397 INFO L130 BoogieDeclarations]: Found specification of procedure read~int
[2023-08-31 01:55:15,397 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2023-08-31 01:55:15,398 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement
[2023-08-31 01:55:15,498 INFO L236 CfgBuilder]: Building ICFG
[2023-08-31 01:55:15,500 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation
[2023-08-31 01:55:15,781 INFO L277 CfgBuilder]: Performing block encoding
[2023-08-31 01:55:15,799 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2023-08-31 01:55:15,800 INFO L302 CfgBuilder]: Removed 2 assume(true) statements.
[2023-08-31 01:55:15,803 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 01:55:15 BoogieIcfgContainer
[2023-08-31 01:55:15,804 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2023-08-31 01:55:15,805 INFO L113 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2023-08-31 01:55:15,805 INFO L271 PluginConnector]: Initializing TraceAbstraction...
[2023-08-31 01:55:15,808 INFO L275 PluginConnector]: TraceAbstraction initialized
[2023-08-31 01:55:15,808 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.08 01:55:14" (1/3) ...
[2023-08-31 01:55:15,809 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2499aa86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.08 01:55:15, skipping insertion in model container
[2023-08-31 01:55:15,809 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:55:15" (2/3) ...
[2023-08-31 01:55:15,809 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2499aa86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.08 01:55:15, skipping insertion in model container
[2023-08-31 01:55:15,810 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 01:55:15" (3/3) ...
[2023-08-31 01:55:15,811 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-misc-2.wvr.c
[2023-08-31 01:55:15,817 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program
[2023-08-31 01:55:15,835 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2023-08-31 01:55:15,835 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2023-08-31 01:55:15,835 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances.
[2023-08-31 01:55:15,897 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions.
[2023-08-31 01:55:15,931 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 102 places, 103 transitions, 222 flow
[2023-08-31 01:55:15,976 INFO L130 PetriNetUnfolder]: 8/101 cut-off events.
[2023-08-31 01:55:15,977 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES.
[2023-08-31 01:55:15,981 INFO L83 FinitePrefix]: Finished finitePrefix Result has 110 conditions, 101 events. 8/101 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 67 event pairs, 0 based on Foata normal form. 0/92 useless extension candidates. Maximal degree in co-relation 65. Up to 2 conditions per place.
[2023-08-31 01:55:15,981 INFO L82 GeneralOperation]: Start removeDead. Operand has 102 places, 103 transitions, 222 flow
[2023-08-31 01:55:15,984 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 92 places, 93 transitions, 198 flow
[2023-08-31 01:55:15,988 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation.
[2023-08-31 01:55:15,996 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 92 places, 93 transitions, 198 flow
[2023-08-31 01:55:15,998 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 92 places, 93 transitions, 198 flow
[2023-08-31 01:55:15,998 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 92 places, 93 transitions, 198 flow
[2023-08-31 01:55:16,025 INFO L130 PetriNetUnfolder]: 8/93 cut-off events.
[2023-08-31 01:55:16,025 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES.
[2023-08-31 01:55:16,026 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102 conditions, 93 events. 8/93 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 66 event pairs, 0 based on Foata normal form. 0/85 useless extension candidates. Maximal degree in co-relation 65. Up to 2 conditions per place.
[2023-08-31 01:55:16,027 INFO L119 LiptonReduction]: Number of co-enabled transitions 728
[2023-08-31 01:55:18,359 INFO L134 LiptonReduction]: Checked pairs total: 789
[2023-08-31 01:55:18,360 INFO L136 LiptonReduction]: Total number of compositions: 94
[2023-08-31 01:55:18,372 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2023-08-31 01:55:18,378 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@2ff326a9, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=<UNSUPPORTED>, UseSemiCommutativity=<UNSUPPORTED>, Solver=<NOT_USED>, SolverTimeout=<NOT_USED>]
[2023-08-31 01:55:18,378 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations.
[2023-08-31 01:55:18,382 INFO L130 PetriNetUnfolder]: 2/12 cut-off events.
[2023-08-31 01:55:18,382 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES.
[2023-08-31 01:55:18,382 INFO L200 CegarLoopForPetriNet]: Found error trace
[2023-08-31 01:55:18,382 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-08-31 01:55:18,383 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] ===
[2023-08-31 01:55:18,387 INFO L145 PredicateUnifier]: Initialized classic predicate unifier
[2023-08-31 01:55:18,387 INFO L85 PathProgramCache]: Analyzing trace with hash 285965286, now seen corresponding path program 1 times
[2023-08-31 01:55:18,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-08-31 01:55:18,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274994307]
[2023-08-31 01:55:18,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-08-31 01:55:18,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-08-31 01:55:18,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-08-31 01:55:18,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-08-31 01:55:18,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-08-31 01:55:18,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274994307]
[2023-08-31 01:55:18,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [274994307] provided 1 perfect and 0 imperfect interpolant sequences
[2023-08-31 01:55:18,767 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-08-31 01:55:18,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1
[2023-08-31 01:55:18,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566446920]
[2023-08-31 01:55:18,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-08-31 01:55:18,775 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2023-08-31 01:55:18,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-08-31 01:55:18,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2023-08-31 01:55:18,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-08-31 01:55:18,815 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 197
[2023-08-31 01:55:18,817 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 18 places, 13 transitions, 38 flow. Second operand has 3 states, 3 states have (on average 91.66666666666667) internal successors, (275), 3 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-31 01:55:18,818 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2023-08-31 01:55:18,818 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 197
[2023-08-31 01:55:18,818 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2023-08-31 01:55:18,881 INFO L130 PetriNetUnfolder]: 41/77 cut-off events.
[2023-08-31 01:55:18,881 INFO L131 PetriNetUnfolder]: For 12/12 co-relation queries the response was YES.
[2023-08-31 01:55:18,882 INFO L83 FinitePrefix]: Finished finitePrefix Result has 174 conditions, 77 events. 41/77 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 163 event pairs, 9 based on Foata normal form. 1/54 useless extension candidates. Maximal degree in co-relation 120. Up to 51 conditions per place.
[2023-08-31 01:55:18,884 INFO L137 encePairwiseOnDemand]: 193/197 looper letters, 19 selfloop transitions, 3 changer transitions 1/23 dead transitions.
[2023-08-31 01:55:18,884 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 20 places, 23 transitions, 113 flow
[2023-08-31 01:55:18,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2023-08-31 01:55:18,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states.
[2023-08-31 01:55:18,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 288 transitions.
[2023-08-31 01:55:18,902 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4873096446700508
[2023-08-31 01:55:18,903 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 288 transitions.
[2023-08-31 01:55:18,904 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 288 transitions.
[2023-08-31 01:55:18,906 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2023-08-31 01:55:18,908 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 288 transitions.
[2023-08-31 01:55:18,914 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 96.0) internal successors, (288), 3 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-31 01:55:18,918 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 197.0) internal successors, (788), 4 states have internal predecessors, (788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-31 01:55:18,918 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 197.0) internal successors, (788), 4 states have internal predecessors, (788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-31 01:55:18,920 INFO L175 Difference]: Start difference. First operand has 18 places, 13 transitions, 38 flow. Second operand 3 states and 288 transitions.
[2023-08-31 01:55:18,920 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 20 places, 23 transitions, 113 flow
[2023-08-31 01:55:18,922 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 16 places, 23 transitions, 99 flow, removed 0 selfloop flow, removed 4 redundant places.
[2023-08-31 01:55:18,924 INFO L231 Difference]: Finished difference. Result has 17 places, 15 transitions, 49 flow
[2023-08-31 01:55:18,925 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=197, PETRI_DIFFERENCE_MINUEND_FLOW=30, PETRI_DIFFERENCE_MINUEND_PLACES=14, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=13, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=49, PETRI_PLACES=17, PETRI_TRANSITIONS=15}
[2023-08-31 01:55:18,929 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, -1 predicate places.
[2023-08-31 01:55:18,930 INFO L495 AbstractCegarLoop]: Abstraction has has 17 places, 15 transitions, 49 flow
[2023-08-31 01:55:18,930 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 91.66666666666667) internal successors, (275), 3 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-31 01:55:18,930 INFO L200 CegarLoopForPetriNet]: Found error trace
[2023-08-31 01:55:18,932 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-08-31 01:55:18,932 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2023-08-31 01:55:18,935 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] ===
[2023-08-31 01:55:18,937 INFO L145 PredicateUnifier]: Initialized classic predicate unifier
[2023-08-31 01:55:18,937 INFO L85 PathProgramCache]: Analyzing trace with hash 275674925, now seen corresponding path program 1 times
[2023-08-31 01:55:18,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-08-31 01:55:18,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450346755]
[2023-08-31 01:55:18,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-08-31 01:55:18,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-08-31 01:55:19,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-08-31 01:55:19,156 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-08-31 01:55:19,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-08-31 01:55:19,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [450346755]
[2023-08-31 01:55:19,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [450346755] provided 1 perfect and 0 imperfect interpolant sequences
[2023-08-31 01:55:19,157 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-08-31 01:55:19,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2023-08-31 01:55:19,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474457189]
[2023-08-31 01:55:19,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-08-31 01:55:19,158 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-08-31 01:55:19,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-08-31 01:55:19,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-08-31 01:55:19,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-08-31 01:55:19,191 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 197
[2023-08-31 01:55:19,192 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 17 places, 15 transitions, 49 flow. Second operand has 4 states, 4 states have (on average 83.0) internal successors, (332), 4 states have internal predecessors, (332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-31 01:55:19,192 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2023-08-31 01:55:19,192 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 197
[2023-08-31 01:55:19,192 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2023-08-31 01:55:19,293 INFO L130 PetriNetUnfolder]: 49/99 cut-off events.
[2023-08-31 01:55:19,294 INFO L131 PetriNetUnfolder]: For 25/25 co-relation queries the response was YES.
[2023-08-31 01:55:19,294 INFO L83 FinitePrefix]: Finished finitePrefix Result has 244 conditions, 99 events. 49/99 cut-off events. For 25/25 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 273 event pairs, 5 based on Foata normal form. 8/107 useless extension candidates. Maximal degree in co-relation 57. Up to 47 conditions per place.
[2023-08-31 01:55:19,295 INFO L137 encePairwiseOnDemand]: 192/197 looper letters, 29 selfloop transitions, 7 changer transitions 2/38 dead transitions.
[2023-08-31 01:55:19,295 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 38 transitions, 189 flow
[2023-08-31 01:55:19,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states.
[2023-08-31 01:55:19,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states.
[2023-08-31 01:55:19,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 436 transitions.
[2023-08-31 01:55:19,298 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44263959390862945
[2023-08-31 01:55:19,298 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 436 transitions.
[2023-08-31 01:55:19,298 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 436 transitions.
[2023-08-31 01:55:19,299 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2023-08-31 01:55:19,299 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 436 transitions.
[2023-08-31 01:55:19,300 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 87.2) internal successors, (436), 5 states have internal predecessors, (436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-31 01:55:19,303 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 197.0) internal successors, (1182), 6 states have internal predecessors, (1182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-31 01:55:19,304 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 197.0) internal successors, (1182), 6 states have internal predecessors, (1182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-31 01:55:19,304 INFO L175 Difference]: Start difference. First operand has 17 places, 15 transitions, 49 flow. Second operand 5 states and 436 transitions.
[2023-08-31 01:55:19,304 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 38 transitions, 189 flow
[2023-08-31 01:55:19,305 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 20 places, 38 transitions, 185 flow, removed 0 selfloop flow, removed 1 redundant places.
[2023-08-31 01:55:19,305 INFO L231 Difference]: Finished difference. Result has 23 places, 21 transitions, 102 flow
[2023-08-31 01:55:19,306 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=197, PETRI_DIFFERENCE_MINUEND_FLOW=46, PETRI_DIFFERENCE_MINUEND_PLACES=16, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=102, PETRI_PLACES=23, PETRI_TRANSITIONS=21}
[2023-08-31 01:55:19,306 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 5 predicate places.
[2023-08-31 01:55:19,306 INFO L495 AbstractCegarLoop]: Abstraction has has 23 places, 21 transitions, 102 flow
[2023-08-31 01:55:19,307 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 83.0) internal successors, (332), 4 states have internal predecessors, (332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-31 01:55:19,307 INFO L200 CegarLoopForPetriNet]: Found error trace
[2023-08-31 01:55:19,307 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-08-31 01:55:19,308 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2023-08-31 01:55:19,308 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] ===
[2023-08-31 01:55:19,310 INFO L145 PredicateUnifier]: Initialized classic predicate unifier
[2023-08-31 01:55:19,310 INFO L85 PathProgramCache]: Analyzing trace with hash -1439336439, now seen corresponding path program 2 times
[2023-08-31 01:55:19,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-08-31 01:55:19,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824072524]
[2023-08-31 01:55:19,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-08-31 01:55:19,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-08-31 01:55:19,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-08-31 01:55:19,474 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-08-31 01:55:19,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-08-31 01:55:19,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824072524]
[2023-08-31 01:55:19,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1824072524] provided 1 perfect and 0 imperfect interpolant sequences
[2023-08-31 01:55:19,474 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-08-31 01:55:19,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2023-08-31 01:55:19,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583664713]
[2023-08-31 01:55:19,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-08-31 01:55:19,475 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-08-31 01:55:19,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-08-31 01:55:19,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-08-31 01:55:19,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-08-31 01:55:19,513 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 197
[2023-08-31 01:55:19,513 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 21 transitions, 102 flow. Second operand has 4 states, 4 states have (on average 83.0) internal successors, (332), 4 states have internal predecessors, (332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-31 01:55:19,513 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2023-08-31 01:55:19,514 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 197
[2023-08-31 01:55:19,514 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2023-08-31 01:55:19,575 INFO L130 PetriNetUnfolder]: 45/93 cut-off events.
[2023-08-31 01:55:19,575 INFO L131 PetriNetUnfolder]: For 81/81 co-relation queries the response was YES.
[2023-08-31 01:55:19,576 INFO L83 FinitePrefix]: Finished finitePrefix Result has 310 conditions, 93 events. 45/93 cut-off events. For 81/81 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 228 event pairs, 11 based on Foata normal form. 4/97 useless extension candidates. Maximal degree in co-relation 216. Up to 59 conditions per place.
[2023-08-31 01:55:19,576 INFO L137 encePairwiseOnDemand]: 193/197 looper letters, 20 selfloop transitions, 6 changer transitions 6/32 dead transitions.
[2023-08-31 01:55:19,576 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 32 transitions, 207 flow
[2023-08-31 01:55:19,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2023-08-31 01:55:19,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states.
[2023-08-31 01:55:19,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 348 transitions.
[2023-08-31 01:55:19,578 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4416243654822335
[2023-08-31 01:55:19,578 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 348 transitions.
[2023-08-31 01:55:19,578 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 348 transitions.
[2023-08-31 01:55:19,578 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2023-08-31 01:55:19,579 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 348 transitions.
[2023-08-31 01:55:19,579 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 87.0) internal successors, (348), 4 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-31 01:55:19,581 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 197.0) internal successors, (985), 5 states have internal predecessors, (985), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-31 01:55:19,581 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 197.0) internal successors, (985), 5 states have internal predecessors, (985), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-31 01:55:19,581 INFO L175 Difference]: Start difference. First operand has 23 places, 21 transitions, 102 flow. Second operand 4 states and 348 transitions.
[2023-08-31 01:55:19,581 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 32 transitions, 207 flow
[2023-08-31 01:55:19,583 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 32 transitions, 207 flow, removed 0 selfloop flow, removed 0 redundant places.
[2023-08-31 01:55:19,584 INFO L231 Difference]: Finished difference. Result has 27 places, 20 transitions, 119 flow
[2023-08-31 01:55:19,584 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=197, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=119, PETRI_PLACES=27, PETRI_TRANSITIONS=20}
[2023-08-31 01:55:19,585 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 9 predicate places.
[2023-08-31 01:55:19,585 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 20 transitions, 119 flow
[2023-08-31 01:55:19,585 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 83.0) internal successors, (332), 4 states have internal predecessors, (332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-31 01:55:19,585 INFO L200 CegarLoopForPetriNet]: Found error trace
[2023-08-31 01:55:19,585 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-08-31 01:55:19,586 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2023-08-31 01:55:19,586 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] ===
[2023-08-31 01:55:19,586 INFO L145 PredicateUnifier]: Initialized classic predicate unifier
[2023-08-31 01:55:19,586 INFO L85 PathProgramCache]: Analyzing trace with hash 1223174604, now seen corresponding path program 1 times
[2023-08-31 01:55:19,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-08-31 01:55:19,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356985508]
[2023-08-31 01:55:19,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-08-31 01:55:19,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-08-31 01:55:19,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-08-31 01:55:19,699 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-08-31 01:55:19,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-08-31 01:55:19,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1356985508]
[2023-08-31 01:55:19,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1356985508] provided 0 perfect and 1 imperfect interpolant sequences
[2023-08-31 01:55:19,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1234060226]
[2023-08-31 01:55:19,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-08-31 01:55:19,700 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-08-31 01:55:19,700 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-08-31 01:55:19,705 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-08-31 01:55:19,713 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2023-08-31 01:55:19,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-08-31 01:55:19,773 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 7 conjunts are in the unsatisfiable core
[2023-08-31 01:55:19,777 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2023-08-31 01:55:20,117 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-08-31 01:55:20,117 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2023-08-31 01:55:20,292 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-08-31 01:55:20,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1234060226] provided 0 perfect and 2 imperfect interpolant sequences
[2023-08-31 01:55:20,292 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2023-08-31 01:55:20,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6
[2023-08-31 01:55:20,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533231421]
[2023-08-31 01:55:20,293 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2023-08-31 01:55:20,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-08-31 01:55:20,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-08-31 01:55:20,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-08-31 01:55:20,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42
[2023-08-31 01:55:20,365 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 197
[2023-08-31 01:55:20,366 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 20 transitions, 119 flow. Second operand has 7 states, 7 states have (on average 80.71428571428571) internal successors, (565), 7 states have internal predecessors, (565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-31 01:55:20,366 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2023-08-31 01:55:20,366 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 197
[2023-08-31 01:55:20,366 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2023-08-31 01:55:20,506 INFO L130 PetriNetUnfolder]: 67/137 cut-off events.
[2023-08-31 01:55:20,506 INFO L131 PetriNetUnfolder]: For 194/194 co-relation queries the response was YES.
[2023-08-31 01:55:20,507 INFO L83 FinitePrefix]: Finished finitePrefix Result has 519 conditions, 137 events. 67/137 cut-off events. For 194/194 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 400 event pairs, 2 based on Foata normal form. 20/157 useless extension candidates. Maximal degree in co-relation 342. Up to 65 conditions per place.
[2023-08-31 01:55:20,508 INFO L137 encePairwiseOnDemand]: 192/197 looper letters, 35 selfloop transitions, 10 changer transitions 4/49 dead transitions.
[2023-08-31 01:55:20,508 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 49 transitions, 348 flow
[2023-08-31 01:55:20,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states.
[2023-08-31 01:55:20,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states.
[2023-08-31 01:55:20,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 508 transitions.
[2023-08-31 01:55:20,511 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42978003384094754
[2023-08-31 01:55:20,511 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 508 transitions.
[2023-08-31 01:55:20,511 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 508 transitions.
[2023-08-31 01:55:20,511 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2023-08-31 01:55:20,511 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 508 transitions.
[2023-08-31 01:55:20,512 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 84.66666666666667) internal successors, (508), 6 states have internal predecessors, (508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-31 01:55:20,514 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 197.0) internal successors, (1379), 7 states have internal predecessors, (1379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-31 01:55:20,515 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 197.0) internal successors, (1379), 7 states have internal predecessors, (1379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-31 01:55:20,515 INFO L175 Difference]: Start difference. First operand has 27 places, 20 transitions, 119 flow. Second operand 6 states and 508 transitions.
[2023-08-31 01:55:20,515 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 49 transitions, 348 flow
[2023-08-31 01:55:20,517 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 49 transitions, 317 flow, removed 9 selfloop flow, removed 3 redundant places.
[2023-08-31 01:55:20,518 INFO L231 Difference]: Finished difference. Result has 32 places, 26 transitions, 182 flow
[2023-08-31 01:55:20,518 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=197, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=182, PETRI_PLACES=32, PETRI_TRANSITIONS=26}
[2023-08-31 01:55:20,519 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 14 predicate places.
[2023-08-31 01:55:20,521 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 26 transitions, 182 flow
[2023-08-31 01:55:20,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 80.71428571428571) internal successors, (565), 7 states have internal predecessors, (565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-31 01:55:20,521 INFO L200 CegarLoopForPetriNet]: Found error trace
[2023-08-31 01:55:20,521 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-08-31 01:55:20,530 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0
[2023-08-31 01:55:20,726 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-08-31 01:55:20,727 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] ===
[2023-08-31 01:55:20,727 INFO L145 PredicateUnifier]: Initialized classic predicate unifier
[2023-08-31 01:55:20,727 INFO L85 PathProgramCache]: Analyzing trace with hash 2057316734, now seen corresponding path program 2 times
[2023-08-31 01:55:20,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-08-31 01:55:20,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380512198]
[2023-08-31 01:55:20,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-08-31 01:55:20,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-08-31 01:55:20,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-08-31 01:55:20,828 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-08-31 01:55:20,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-08-31 01:55:20,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380512198]
[2023-08-31 01:55:20,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [380512198] provided 1 perfect and 0 imperfect interpolant sequences
[2023-08-31 01:55:20,829 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-08-31 01:55:20,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2023-08-31 01:55:20,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133068297]
[2023-08-31 01:55:20,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-08-31 01:55:20,829 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-08-31 01:55:20,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-08-31 01:55:20,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-08-31 01:55:20,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-08-31 01:55:20,858 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 197
[2023-08-31 01:55:20,858 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 26 transitions, 182 flow. Second operand has 4 states, 4 states have (on average 83.0) internal successors, (332), 4 states have internal predecessors, (332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-31 01:55:20,858 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2023-08-31 01:55:20,858 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 197
[2023-08-31 01:55:20,858 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2023-08-31 01:55:20,928 INFO L130 PetriNetUnfolder]: 69/141 cut-off events.
[2023-08-31 01:55:20,928 INFO L131 PetriNetUnfolder]: For 348/348 co-relation queries the response was YES.
[2023-08-31 01:55:20,929 INFO L83 FinitePrefix]: Finished finitePrefix Result has 601 conditions, 141 events. 69/141 cut-off events. For 348/348 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 400 event pairs, 9 based on Foata normal form. 2/143 useless extension candidates. Maximal degree in co-relation 400. Up to 62 conditions per place.
[2023-08-31 01:55:20,930 INFO L137 encePairwiseOnDemand]: 192/197 looper letters, 35 selfloop transitions, 8 changer transitions 2/45 dead transitions.
[2023-08-31 01:55:20,930 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 45 transitions, 377 flow
[2023-08-31 01:55:20,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states.
[2023-08-31 01:55:20,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states.
[2023-08-31 01:55:20,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 432 transitions.
[2023-08-31 01:55:20,932 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4385786802030457
[2023-08-31 01:55:20,932 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 432 transitions.
[2023-08-31 01:55:20,932 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 432 transitions.
[2023-08-31 01:55:20,933 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2023-08-31 01:55:20,933 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 432 transitions.
[2023-08-31 01:55:20,934 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 86.4) internal successors, (432), 5 states have internal predecessors, (432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-31 01:55:20,936 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 197.0) internal successors, (1182), 6 states have internal predecessors, (1182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-31 01:55:20,936 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 197.0) internal successors, (1182), 6 states have internal predecessors, (1182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-31 01:55:20,937 INFO L175 Difference]: Start difference. First operand has 32 places, 26 transitions, 182 flow. Second operand 5 states and 432 transitions.
[2023-08-31 01:55:20,937 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 45 transitions, 377 flow
[2023-08-31 01:55:20,941 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 45 transitions, 356 flow, removed 9 selfloop flow, removed 1 redundant places.
[2023-08-31 01:55:20,942 INFO L231 Difference]: Finished difference. Result has 37 places, 29 transitions, 217 flow
[2023-08-31 01:55:20,942 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=197, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=217, PETRI_PLACES=37, PETRI_TRANSITIONS=29}
[2023-08-31 01:55:20,945 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 19 predicate places.
[2023-08-31 01:55:20,945 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 29 transitions, 217 flow
[2023-08-31 01:55:20,946 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 83.0) internal successors, (332), 4 states have internal predecessors, (332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-31 01:55:20,946 INFO L200 CegarLoopForPetriNet]: Found error trace
[2023-08-31 01:55:20,947 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-08-31 01:55:20,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2023-08-31 01:55:20,947 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] ===
[2023-08-31 01:55:20,947 INFO L145 PredicateUnifier]: Initialized classic predicate unifier
[2023-08-31 01:55:20,948 INFO L85 PathProgramCache]: Analyzing trace with hash 18175184, now seen corresponding path program 1 times
[2023-08-31 01:55:20,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-08-31 01:55:20,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23898119]
[2023-08-31 01:55:20,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-08-31 01:55:20,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-08-31 01:55:20,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-08-31 01:55:21,257 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2023-08-31 01:55:21,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-08-31 01:55:21,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23898119]
[2023-08-31 01:55:21,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [23898119] provided 0 perfect and 1 imperfect interpolant sequences
[2023-08-31 01:55:21,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1557174648]
[2023-08-31 01:55:21,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-08-31 01:55:21,258 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-08-31 01:55:21,258 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-08-31 01:55:21,259 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-08-31 01:55:21,285 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2023-08-31 01:55:21,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-08-31 01:55:21,342 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 7 conjunts are in the unsatisfiable core
[2023-08-31 01:55:21,343 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2023-08-31 01:55:21,667 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked.
[2023-08-31 01:55:21,668 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2023-08-31 01:55:21,857 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked.
[2023-08-31 01:55:21,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1557174648] provided 0 perfect and 2 imperfect interpolant sequences
[2023-08-31 01:55:21,858 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2023-08-31 01:55:21,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 7
[2023-08-31 01:55:21,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991506775]
[2023-08-31 01:55:21,858 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2023-08-31 01:55:21,858 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2023-08-31 01:55:21,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-08-31 01:55:21,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2023-08-31 01:55:21,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56
[2023-08-31 01:55:21,931 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 197
[2023-08-31 01:55:21,932 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 29 transitions, 217 flow. Second operand has 8 states, 8 states have (on average 84.125) internal successors, (673), 8 states have internal predecessors, (673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-31 01:55:21,932 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2023-08-31 01:55:21,932 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 197
[2023-08-31 01:55:21,932 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2023-08-31 01:55:22,127 INFO L130 PetriNetUnfolder]: 151/294 cut-off events.
[2023-08-31 01:55:22,127 INFO L131 PetriNetUnfolder]: For 923/923 co-relation queries the response was YES.
[2023-08-31 01:55:22,129 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1355 conditions, 294 events. 151/294 cut-off events. For 923/923 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1083 event pairs, 20 based on Foata normal form. 24/318 useless extension candidates. Maximal degree in co-relation 748. Up to 121 conditions per place.
[2023-08-31 01:55:22,131 INFO L137 encePairwiseOnDemand]: 193/197 looper letters, 62 selfloop transitions, 15 changer transitions 0/77 dead transitions.
[2023-08-31 01:55:22,131 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 77 transitions, 686 flow
[2023-08-31 01:55:22,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states.
[2023-08-31 01:55:22,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states.
[2023-08-31 01:55:22,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 614 transitions.
[2023-08-31 01:55:22,134 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4452501812907904
[2023-08-31 01:55:22,134 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 614 transitions.
[2023-08-31 01:55:22,134 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 614 transitions.
[2023-08-31 01:55:22,134 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2023-08-31 01:55:22,134 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 614 transitions.
[2023-08-31 01:55:22,136 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 87.71428571428571) internal successors, (614), 7 states have internal predecessors, (614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-31 01:55:22,138 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 197.0) internal successors, (1576), 8 states have internal predecessors, (1576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-31 01:55:22,138 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 197.0) internal successors, (1576), 8 states have internal predecessors, (1576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-31 01:55:22,138 INFO L175 Difference]: Start difference. First operand has 37 places, 29 transitions, 217 flow. Second operand 7 states and 614 transitions.
[2023-08-31 01:55:22,138 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 77 transitions, 686 flow
[2023-08-31 01:55:22,141 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 77 transitions, 682 flow, removed 2 selfloop flow, removed 0 redundant places.
[2023-08-31 01:55:22,142 INFO L231 Difference]: Finished difference. Result has 45 places, 38 transitions, 363 flow
[2023-08-31 01:55:22,142 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=197, PETRI_DIFFERENCE_MINUEND_FLOW=215, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=363, PETRI_PLACES=45, PETRI_TRANSITIONS=38}
[2023-08-31 01:55:22,143 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 27 predicate places.
[2023-08-31 01:55:22,143 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 38 transitions, 363 flow
[2023-08-31 01:55:22,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 84.125) internal successors, (673), 8 states have internal predecessors, (673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-31 01:55:22,144 INFO L200 CegarLoopForPetriNet]: Found error trace
[2023-08-31 01:55:22,144 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-08-31 01:55:22,152 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0
[2023-08-31 01:55:22,350 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5
[2023-08-31 01:55:22,350 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] ===
[2023-08-31 01:55:22,350 INFO L145 PredicateUnifier]: Initialized classic predicate unifier
[2023-08-31 01:55:22,351 INFO L85 PathProgramCache]: Analyzing trace with hash 1308914164, now seen corresponding path program 2 times
[2023-08-31 01:55:22,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-08-31 01:55:22,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430377421]
[2023-08-31 01:55:22,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-08-31 01:55:22,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-08-31 01:55:22,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-08-31 01:55:23,184 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2023-08-31 01:55:23,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-08-31 01:55:23,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430377421]
[2023-08-31 01:55:23,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1430377421] provided 0 perfect and 1 imperfect interpolant sequences
[2023-08-31 01:55:23,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1706472799]
[2023-08-31 01:55:23,185 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2023-08-31 01:55:23,185 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-08-31 01:55:23,185 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-08-31 01:55:23,186 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-08-31 01:55:23,207 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process
[2023-08-31 01:55:23,269 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2023-08-31 01:55:23,270 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2023-08-31 01:55:23,271 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 16 conjunts are in the unsatisfiable core
[2023-08-31 01:55:23,273 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2023-08-31 01:55:23,622 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2023-08-31 01:55:23,622 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2023-08-31 01:55:24,080 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2023-08-31 01:55:24,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1706472799] provided 0 perfect and 2 imperfect interpolant sequences
[2023-08-31 01:55:24,081 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2023-08-31 01:55:24,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10
[2023-08-31 01:55:24,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193413153]
[2023-08-31 01:55:24,081 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2023-08-31 01:55:24,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states
[2023-08-31 01:55:24,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-08-31 01:55:24,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants.
[2023-08-31 01:55:24,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132
[2023-08-31 01:55:24,528 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 197
[2023-08-31 01:55:24,530 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 38 transitions, 363 flow. Second operand has 12 states, 12 states have (on average 73.75) internal successors, (885), 12 states have internal predecessors, (885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-31 01:55:24,530 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2023-08-31 01:55:24,530 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 197
[2023-08-31 01:55:24,530 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2023-08-31 01:55:24,955 INFO L130 PetriNetUnfolder]: 298/596 cut-off events.
[2023-08-31 01:55:24,955 INFO L131 PetriNetUnfolder]: For 2519/2519 co-relation queries the response was YES.
[2023-08-31 01:55:24,958 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2935 conditions, 596 events. 298/596 cut-off events. For 2519/2519 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 2915 event pairs, 14 based on Foata normal form. 5/601 useless extension candidates. Maximal degree in co-relation 1364. Up to 233 conditions per place.
[2023-08-31 01:55:24,961 INFO L137 encePairwiseOnDemand]: 192/197 looper letters, 62 selfloop transitions, 47 changer transitions 2/111 dead transitions.
[2023-08-31 01:55:24,961 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 111 transitions, 1116 flow
[2023-08-31 01:55:24,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states.
[2023-08-31 01:55:24,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states.
[2023-08-31 01:55:24,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 777 transitions.
[2023-08-31 01:55:24,964 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39441624365482236
[2023-08-31 01:55:24,964 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 777 transitions.
[2023-08-31 01:55:24,964 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 777 transitions.
[2023-08-31 01:55:24,964 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2023-08-31 01:55:24,965 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 777 transitions.
[2023-08-31 01:55:24,966 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 77.7) internal successors, (777), 10 states have internal predecessors, (777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-31 01:55:24,969 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 197.0) internal successors, (2167), 11 states have internal predecessors, (2167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-31 01:55:24,969 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 197.0) internal successors, (2167), 11 states have internal predecessors, (2167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-31 01:55:24,969 INFO L175 Difference]: Start difference. First operand has 45 places, 38 transitions, 363 flow. Second operand 10 states and 777 transitions.
[2023-08-31 01:55:24,970 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 111 transitions, 1116 flow
[2023-08-31 01:55:24,975 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 111 transitions, 1033 flow, removed 37 selfloop flow, removed 2 redundant places.
[2023-08-31 01:55:24,977 INFO L231 Difference]: Finished difference. Result has 57 places, 73 transitions, 841 flow
[2023-08-31 01:55:24,977 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=197, PETRI_DIFFERENCE_MINUEND_FLOW=316, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=841, PETRI_PLACES=57, PETRI_TRANSITIONS=73}
[2023-08-31 01:55:24,978 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 39 predicate places.
[2023-08-31 01:55:24,978 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 73 transitions, 841 flow
[2023-08-31 01:55:24,978 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 73.75) internal successors, (885), 12 states have internal predecessors, (885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-31 01:55:24,979 INFO L200 CegarLoopForPetriNet]: Found error trace
[2023-08-31 01:55:24,979 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-08-31 01:55:24,989 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0
[2023-08-31 01:55:25,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-08-31 01:55:25,189 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] ===
[2023-08-31 01:55:25,190 INFO L145 PredicateUnifier]: Initialized classic predicate unifier
[2023-08-31 01:55:25,190 INFO L85 PathProgramCache]: Analyzing trace with hash -970027468, now seen corresponding path program 3 times
[2023-08-31 01:55:25,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-08-31 01:55:25,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307103911]
[2023-08-31 01:55:25,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-08-31 01:55:25,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-08-31 01:55:25,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-08-31 01:55:25,978 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2023-08-31 01:55:25,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-08-31 01:55:25,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307103911]
[2023-08-31 01:55:25,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1307103911] provided 0 perfect and 1 imperfect interpolant sequences
[2023-08-31 01:55:25,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [179330438]
[2023-08-31 01:55:25,979 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
[2023-08-31 01:55:25,979 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-08-31 01:55:25,979 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-08-31 01:55:25,980 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-08-31 01:55:25,987 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process
[2023-08-31 01:55:26,062 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s)
[2023-08-31 01:55:26,063 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2023-08-31 01:55:26,064 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 16 conjunts are in the unsatisfiable core
[2023-08-31 01:55:26,066 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2023-08-31 01:55:26,638 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-08-31 01:55:26,638 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2023-08-31 01:55:27,297 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-08-31 01:55:27,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [179330438] provided 0 perfect and 2 imperfect interpolant sequences
[2023-08-31 01:55:27,298 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2023-08-31 01:55:27,298 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 5] total 12
[2023-08-31 01:55:27,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656458166]
[2023-08-31 01:55:27,298 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2023-08-31 01:55:27,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states
[2023-08-31 01:55:27,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-08-31 01:55:27,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants.
[2023-08-31 01:55:27,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182
[2023-08-31 01:55:27,927 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 197
[2023-08-31 01:55:27,928 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 73 transitions, 841 flow. Second operand has 14 states, 14 states have (on average 78.35714285714286) internal successors, (1097), 14 states have internal predecessors, (1097), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-31 01:55:27,928 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2023-08-31 01:55:27,928 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 197
[2023-08-31 01:55:27,928 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2023-08-31 01:55:29,255 INFO L130 PetriNetUnfolder]: 431/881 cut-off events.
[2023-08-31 01:55:29,255 INFO L131 PetriNetUnfolder]: For 4963/4963 co-relation queries the response was YES.
[2023-08-31 01:55:29,258 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4694 conditions, 881 events. 431/881 cut-off events. For 4963/4963 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 4918 event pairs, 16 based on Foata normal form. 6/887 useless extension candidates. Maximal degree in co-relation 3804. Up to 339 conditions per place.
[2023-08-31 01:55:29,262 INFO L137 encePairwiseOnDemand]: 192/197 looper letters, 57 selfloop transitions, 101 changer transitions 2/160 dead transitions.
[2023-08-31 01:55:29,262 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 160 transitions, 1791 flow
[2023-08-31 01:55:29,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states.
[2023-08-31 01:55:29,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states.
[2023-08-31 01:55:29,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1225 transitions.
[2023-08-31 01:55:29,266 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41455160744500846
[2023-08-31 01:55:29,266 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1225 transitions.
[2023-08-31 01:55:29,266 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1225 transitions.
[2023-08-31 01:55:29,266 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2023-08-31 01:55:29,266 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1225 transitions.
[2023-08-31 01:55:29,269 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 81.66666666666667) internal successors, (1225), 15 states have internal predecessors, (1225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-31 01:55:29,273 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 197.0) internal successors, (3152), 16 states have internal predecessors, (3152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-31 01:55:29,273 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 197.0) internal successors, (3152), 16 states have internal predecessors, (3152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-31 01:55:29,273 INFO L175 Difference]: Start difference. First operand has 57 places, 73 transitions, 841 flow. Second operand 15 states and 1225 transitions.
[2023-08-31 01:55:29,274 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 160 transitions, 1791 flow
[2023-08-31 01:55:29,285 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 160 transitions, 1700 flow, removed 44 selfloop flow, removed 1 redundant places.
[2023-08-31 01:55:29,287 INFO L231 Difference]: Finished difference. Result has 71 places, 111 transitions, 1378 flow
[2023-08-31 01:55:29,287 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=197, PETRI_DIFFERENCE_MINUEND_FLOW=750, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1378, PETRI_PLACES=71, PETRI_TRANSITIONS=111}
[2023-08-31 01:55:29,288 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 53 predicate places.
[2023-08-31 01:55:29,288 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 111 transitions, 1378 flow
[2023-08-31 01:55:29,289 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 78.35714285714286) internal successors, (1097), 14 states have internal predecessors, (1097), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-31 01:55:29,289 INFO L200 CegarLoopForPetriNet]: Found error trace
[2023-08-31 01:55:29,289 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-08-31 01:55:29,299 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0
[2023-08-31 01:55:29,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-08-31 01:55:29,495 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] ===
[2023-08-31 01:55:29,495 INFO L145 PredicateUnifier]: Initialized classic predicate unifier
[2023-08-31 01:55:29,496 INFO L85 PathProgramCache]: Analyzing trace with hash 1894613441, now seen corresponding path program 4 times
[2023-08-31 01:55:29,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-08-31 01:55:29,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [683073001]
[2023-08-31 01:55:29,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-08-31 01:55:29,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-08-31 01:55:29,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-08-31 01:55:29,743 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-08-31 01:55:29,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-08-31 01:55:29,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [683073001]
[2023-08-31 01:55:29,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [683073001] provided 0 perfect and 1 imperfect interpolant sequences
[2023-08-31 01:55:29,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1873694049]
[2023-08-31 01:55:29,744 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST
[2023-08-31 01:55:29,744 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-08-31 01:55:29,744 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-08-31 01:55:29,745 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-08-31 01:55:29,748 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process
[2023-08-31 01:55:29,873 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2023-08-31 01:55:29,873 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2023-08-31 01:55:29,874 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 13 conjunts are in the unsatisfiable core
[2023-08-31 01:55:29,875 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2023-08-31 01:55:29,973 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked.
[2023-08-31 01:55:29,973 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2023-08-31 01:55:30,140 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked.
[2023-08-31 01:55:30,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1873694049] provided 0 perfect and 2 imperfect interpolant sequences
[2023-08-31 01:55:30,141 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2023-08-31 01:55:30,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 15
[2023-08-31 01:55:30,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538786223]
[2023-08-31 01:55:30,141 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2023-08-31 01:55:30,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states
[2023-08-31 01:55:30,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-08-31 01:55:30,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants.
[2023-08-31 01:55:30,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240
[2023-08-31 01:55:30,374 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 197
[2023-08-31 01:55:30,375 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 111 transitions, 1378 flow. Second operand has 16 states, 16 states have (on average 82.625) internal successors, (1322), 16 states have internal predecessors, (1322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-31 01:55:30,376 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2023-08-31 01:55:30,376 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 197
[2023-08-31 01:55:30,376 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2023-08-31 01:55:39,876 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []
[2023-08-31 01:55:42,890 INFO L130 PetriNetUnfolder]: 988/2041 cut-off events.
[2023-08-31 01:55:42,890 INFO L131 PetriNetUnfolder]: For 15755/15755 co-relation queries the response was YES.
[2023-08-31 01:55:42,895 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11713 conditions, 2041 events. 988/2041 cut-off events. For 15755/15755 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 14051 event pairs, 0 based on Foata normal form. 402/2443 useless extension candidates. Maximal degree in co-relation 10000. Up to 751 conditions per place.
[2023-08-31 01:55:42,902 INFO L137 encePairwiseOnDemand]: 192/197 looper letters, 197 selfloop transitions, 244 changer transitions 141/582 dead transitions.
[2023-08-31 01:55:42,902 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 582 transitions, 7744 flow
[2023-08-31 01:55:42,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states.
[2023-08-31 01:55:42,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states.
[2023-08-31 01:55:42,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 5694 transitions.
[2023-08-31 01:55:42,919 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4313963179028714
[2023-08-31 01:55:42,919 INFO L72 ComplementDD]: Start complementDD. Operand 67 states and 5694 transitions.
[2023-08-31 01:55:42,919 INFO L73 IsDeterministic]: Start isDeterministic. Operand 67 states and 5694 transitions.
[2023-08-31 01:55:42,924 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2023-08-31 01:55:42,924 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 67 states and 5694 transitions.
[2023-08-31 01:55:42,937 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 68 states, 67 states have (on average 84.98507462686567) internal successors, (5694), 67 states have internal predecessors, (5694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-31 01:55:42,954 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 68 states, 68 states have (on average 197.0) internal successors, (13396), 68 states have internal predecessors, (13396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-31 01:55:42,982 INFO L81 ComplementDD]: Finished complementDD. Result has 68 states, 68 states have (on average 197.0) internal successors, (13396), 68 states have internal predecessors, (13396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-31 01:55:42,983 INFO L175 Difference]: Start difference. First operand has 71 places, 111 transitions, 1378 flow. Second operand 67 states and 5694 transitions.
[2023-08-31 01:55:42,983 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 582 transitions, 7744 flow
[2023-08-31 01:55:43,037 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 582 transitions, 6062 flow, removed 744 selfloop flow, removed 8 redundant places.
[2023-08-31 01:55:43,051 INFO L231 Difference]: Finished difference. Result has 138 places, 302 transitions, 3518 flow
[2023-08-31 01:55:43,051 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=197, PETRI_DIFFERENCE_MINUEND_FLOW=989, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=67, PETRI_FLOW=3518, PETRI_PLACES=138, PETRI_TRANSITIONS=302}
[2023-08-31 01:55:43,052 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 120 predicate places.
[2023-08-31 01:55:43,052 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 302 transitions, 3518 flow
[2023-08-31 01:55:43,053 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 82.625) internal successors, (1322), 16 states have internal predecessors, (1322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-31 01:55:43,053 INFO L200 CegarLoopForPetriNet]: Found error trace
[2023-08-31 01:55:43,053 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-08-31 01:55:43,058 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0
[2023-08-31 01:55:43,257 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-08-31 01:55:43,257 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] ===
[2023-08-31 01:55:43,257 INFO L145 PredicateUnifier]: Initialized classic predicate unifier
[2023-08-31 01:55:43,258 INFO L85 PathProgramCache]: Analyzing trace with hash -1403469600, now seen corresponding path program 5 times
[2023-08-31 01:55:43,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-08-31 01:55:43,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095720596]
[2023-08-31 01:55:43,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-08-31 01:55:43,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-08-31 01:55:43,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-08-31 01:55:43,475 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-08-31 01:55:43,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-08-31 01:55:43,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095720596]
[2023-08-31 01:55:43,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1095720596] provided 0 perfect and 1 imperfect interpolant sequences
[2023-08-31 01:55:43,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1674777097]
[2023-08-31 01:55:43,476 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1
[2023-08-31 01:55:43,476 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-08-31 01:55:43,477 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-08-31 01:55:43,478 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-08-31 01:55:43,480 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process
[2023-08-31 01:55:43,571 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s)
[2023-08-31 01:55:43,571 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2023-08-31 01:55:43,572 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 13 conjunts are in the unsatisfiable core
[2023-08-31 01:55:43,573 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2023-08-31 01:55:46,401 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-08-31 01:55:46,402 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2023-08-31 01:56:07,356 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-08-31 01:56:07,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1674777097] provided 0 perfect and 2 imperfect interpolant sequences
[2023-08-31 01:56:07,356 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2023-08-31 01:56:07,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7, 7] total 17
[2023-08-31 01:56:07,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7079961]
[2023-08-31 01:56:07,357 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2023-08-31 01:56:07,357 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states
[2023-08-31 01:56:07,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-08-31 01:56:07,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants.
[2023-08-31 01:56:07,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=240, Unknown=0, NotChecked=0, Total=306
[2023-08-31 01:56:07,823 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 197
[2023-08-31 01:56:07,824 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 302 transitions, 3518 flow. Second operand has 18 states, 18 states have (on average 81.44444444444444) internal successors, (1466), 18 states have internal predecessors, (1466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-31 01:56:07,824 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2023-08-31 01:56:07,824 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 197
[2023-08-31 01:56:07,824 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2023-08-31 01:56:09,721 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []
[2023-08-31 01:56:27,406 INFO L130 PetriNetUnfolder]: 1011/1870 cut-off events.
[2023-08-31 01:56:27,406 INFO L131 PetriNetUnfolder]: For 9484/9484 co-relation queries the response was YES.
[2023-08-31 01:56:27,412 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10487 conditions, 1870 events. 1011/1870 cut-off events. For 9484/9484 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 10765 event pairs, 4 based on Foata normal form. 116/1986 useless extension candidates. Maximal degree in co-relation 10422. Up to 662 conditions per place.
[2023-08-31 01:56:27,422 INFO L137 encePairwiseOnDemand]: 192/197 looper letters, 311 selfloop transitions, 307 changer transitions 0/618 dead transitions.
[2023-08-31 01:56:27,423 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 618 transitions, 7552 flow
[2023-08-31 01:56:27,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states.
[2023-08-31 01:56:27,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states.
[2023-08-31 01:56:27,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 3595 transitions.
[2023-08-31 01:56:27,429 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42438909219690707
[2023-08-31 01:56:27,429 INFO L72 ComplementDD]: Start complementDD. Operand 43 states and 3595 transitions.
[2023-08-31 01:56:27,429 INFO L73 IsDeterministic]: Start isDeterministic. Operand 43 states and 3595 transitions.
[2023-08-31 01:56:27,430 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2023-08-31 01:56:27,430 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 43 states and 3595 transitions.
[2023-08-31 01:56:27,436 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 44 states, 43 states have (on average 83.6046511627907) internal successors, (3595), 43 states have internal predecessors, (3595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-31 01:56:27,444 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 44 states, 44 states have (on average 197.0) internal successors, (8668), 44 states have internal predecessors, (8668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-31 01:56:27,446 INFO L81 ComplementDD]: Finished complementDD. Result has 44 states, 44 states have (on average 197.0) internal successors, (8668), 44 states have internal predecessors, (8668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-31 01:56:27,446 INFO L175 Difference]: Start difference. First operand has 138 places, 302 transitions, 3518 flow. Second operand 43 states and 3595 transitions.
[2023-08-31 01:56:27,447 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 618 transitions, 7552 flow
[2023-08-31 01:56:27,519 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 618 transitions, 5921 flow, removed 729 selfloop flow, removed 16 redundant places.
[2023-08-31 01:56:27,535 INFO L231 Difference]: Finished difference. Result has 171 places, 480 transitions, 5316 flow
[2023-08-31 01:56:27,536 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=197, PETRI_DIFFERENCE_MINUEND_FLOW=2498, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=297, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=149, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=43, PETRI_FLOW=5316, PETRI_PLACES=171, PETRI_TRANSITIONS=480}
[2023-08-31 01:56:27,537 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 153 predicate places.
[2023-08-31 01:56:27,537 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 480 transitions, 5316 flow
[2023-08-31 01:56:27,538 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 81.44444444444444) internal successors, (1466), 18 states have internal predecessors, (1466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-08-31 01:56:27,538 INFO L200 CegarLoopForPetriNet]: Found error trace
[2023-08-31 01:56:27,538 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-08-31 01:56:27,544 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0
[2023-08-31 01:56:27,744 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-08-31 01:56:27,745 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] ===
[2023-08-31 01:56:27,745 INFO L145 PredicateUnifier]: Initialized classic predicate unifier
[2023-08-31 01:56:27,745 INFO L85 PathProgramCache]: Analyzing trace with hash -2100218938, now seen corresponding path program 6 times
[2023-08-31 01:56:27,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-08-31 01:56:27,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975070988]
[2023-08-31 01:56:27,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-08-31 01:56:27,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-08-31 01:56:27,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-08-31 01:56:28,208 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked.
[2023-08-31 01:56:28,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-08-31 01:56:28,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [975070988]
[2023-08-31 01:56:28,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [975070988] provided 0 perfect and 1 imperfect interpolant sequences
[2023-08-31 01:56:28,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1205444991]
[2023-08-31 01:56:28,209 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE
[2023-08-31 01:56:28,209 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-08-31 01:56:28,209 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-08-31 01:56:28,211 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-08-31 01:56:28,213 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process
[2023-08-31 01:56:28,332 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s)
[2023-08-31 01:56:28,332 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2023-08-31 01:56:28,334 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 13 conjunts are in the unsatisfiable core
[2023-08-31 01:56:28,335 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2023-08-31 01:56:28,710 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 10 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked.
[2023-08-31 01:56:28,711 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2023-08-31 01:56:39,604 WARN L222 SmtUtils]: Spent 9.55s on a formula simplification. DAG size of input: 1192 DAG size of output: 1111 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify)
Killed by 15